diff --git a/requirements.txt b/requirements.txt
index 1f0dfaf..4223aa6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,24 +20,20 @@
 
 virtualenv
 
-flake8==3.8.2
-pexpect==4.8.0
-pylint==2.5.2
-yamllint==1.23.0
+flake8
+pexpect
+pylint
+yamllint
 
 # -----------------------------------------------------------------------
 # https://pypi.org/project/robotframework/#history
 # -----------------------------------------------------------------------
-robotframework==3.1.2                    # 2019-05-24
-# robotframework==6.1.1                    # 2019-05-24
-robotframework-kafkalibrary==0.0.3
-robotframework-lint==1.0
-robotframework-requests==0.7.0
-robotframework-sshlibrary==3.8.0
-
-# replace when we can use upstream (needs python 3.6)
-git+https://github.com/zdw/robotframework-importresource@b81b87aabaee0594e966687b41e3674b866f28ee
-cord-robot==2.1.10
+robotframework
+robotframework-kafkalibrary
+robotframework-lint
+robotframework-requests
+robotframework-sshlibrary
+cord-robot
 
 # -----------------------------------------------------------------------
 # https://pypi.org/project/robotframework-tidy/#history
@@ -50,12 +46,12 @@
 # -----------------------------------------------------------------------
 # robotframework-robocop
 
-matplotlib==3.3.4
-requests==2.24.0
+matplotlib
+requests
 grpc-robot>=2.9.3
 kafka-robot>=2.3.2
 voltha-protos>=4.2.0
-protobuf>=3.15.7,<3.20.0
+protobuf
 protobuf3-to-dict>=0.1.5
 device-management-interface>=1.2.1